Bracket.



1\T0`.'815,947.z PATENTED MAR. 27. 1.966.

A. R. FERGUSSON. Y f

BRACKET., APPLICATION FILED 13510.31. 1 904.

l UNITED sienne, PATENT orrien.

ALAN Ross raiieussoii, or New roeien. Y. i

` y Bewoner.Al l l Specication of letters Patent.

Patented March l2'?, 1906.

ippiiaaon-mrnmmter 31,1904. sereine. 239.126.

To (tZLwh/om bmw-y gon-cern, '-1 f Be it known that I, ALAN Rona FEReUsSON, a citizen oi the United States, residing i in the borough ofManhattan, city of New York, in'the county of Newv York andState of NewYork,'have invented certain new and useful Improvements in Brackets, ofwhich 'V the-'following isa specification. 11.

This invention-relates to brackets, it morev particularly relating,however, to the joint or coupling between the arm and its support, theobject ofl the/invention being to provide a simple and efficientuniversal joint, while rigidly maintainin the movable member or arm ofthe brac et in its adjusted position,

andwhich 'is not only simple and efficient in operation, but inexpensiveto manufacture. In the drawings accompanying and form-` -fing -a' partof this speciication,-Figure 1 is a' view, partly in section, of oneform of this A"bracket adapted for supporting an incandescent lamp.4Fig.. 2 is a'perspective view of this improved joint. Figs. 3 and 4 aresec- Y* tional views illustrating this improved joint.

Fig-'5 is a view illustrating the members of the joint, and Fig. 6 is aview of a modifica* tion thereof.V

j `Similar characters of vreference indicate like arts in all thedrawings.

T is improved bracl'iet, lwhich may be used to support various devices,comprises in the form shown a standard orI supporting member 2 and anadjustable member or arm 3. The adjustable member or arm 3 in the'presen-t instance comprises a telescopic arm,

one member, as 4', sliding-within the other, as

45 stud 9, shown locatedat right ang es to the '5, kbeing provided withshoulders 6 and 7 tolimit 'the extension'thereof, The sliding member/i'is provided with aA suitable joint or coupling for thesupport ofi theparticular device to be carried thereby and which in the 'presentinstance is shown as a ball and socket joint 8, whereby 'thel lamp -maybe moved in various directions. The inner end Vot this arm is providedwith 'a pro ection or arm, for carrying one part of the joint. The

standard10, ,which may be of any suitable i form, is shown secured to aplate 11, which'is t means of' support.

comprisingwalpair of members 12 and 13,

adapted' for. attachment toa; desk vor Yother This standard is showneach having a concaved part or socket 14 and an axial openingl extendingtherethrough for the'passage of-fa clam ing-bolt 16, one of Such'members, as 13, being preferably pre1 vided thethreaded vend 18 .of thebolt projects.

v'The ballmeniber 2O of this joint is made up' of several members. Inone form it comprises a pair of substantially hemisphericallyformedmembers 21 and l22, one of which, as 21, isv shown secured to or formedintegral with the projectionor stud 9 of the arm, and between which islocated a disk 23, having an vopening 24 therethrough through which theclamping-bolt passes. When assembled, the parts are secured in iirm'engagement with each other bythe members 12 andy 13 andtheclamping-bolt, Vthe bolt forming the axis for the ball when it isdesire-d lto swing the arm up'a'nd down. vWhen it is desired to move thebracket in a horizontal direction, `the 'disk 23 remains stationary,while that porc tionof the ball to which the armiis connected rotatesupon it. form of joint permits a vertical movement 'i and substantiallya uniwith athreaded portion 1.7, intowhich versal movement oftheball'relativelto the socket, while at the same time maintaining -theparts in firm irictional ,gag'ement, so

that when the bracket is adjusted it will remain in such adjustedposition.

in the form Shown in ing. e the dei; on in termediate member of the ballis done. away with, the lower hemisphere 30 being provided with agroove' or recess 3 1 tor the passage ofV thebolt, the groove being solocated that the periphery of the bolt' will be flush with the 4 flatsurface 32 of the grooved b'all member,

and thus not interfere with the rotation of theotherbgill memberrelative to the grooved member thereoi.` lC lhe same movement `of 5 ythe partsis obtained in this structure as in that just described.

The term "ball or ball member. as

used herein and in the vclaims is not to be interpreted as a limitationto a sphere, since in the form shown in Figs. 1l to 5 the lowerhemispherical member could be es illustrated in'Fi'g. 4 or in somestructures entirely dispensed with, while the lower hemisphere roo ofFig. 6 may be attened 'out at the pole, as

illustrated, the term ball or bal ber being usedr as an' aptV term todeiine the structure. A

I. claim as my invention- 1. A joint comprising ball and `socket membersand a clamping-bolt maintaining the parte proper working position, saidbolt forming-an axis for the ball to turn upon, one (part of said ballhaving movement indepen ently oianother part thereof.

. bolt forming an axis'for theball to turn upon,

vranged to limit the movement of one of said -ZQ'A joint comprising ballund socket- Inembers and a clempin -bolt meintainin the parts in properwor g position, sai

parts exce t upon the clamping means as en axis, anot er of said partsbeing movable in dependent ofthe clamping means. j l

5. In e device of the character described, the combination of twomembers, one membcr'coinprising a pair of .conea'ved jaws, e ballmemberl comprising several parts, e. clamping member passed through oneof said' ball perts :rnd secured in said jews, the bell as e. Wholeturning on seid clamping member7 en armradielly secured to one of thebell parts, said letter part being rotatable in said Jaws with relationto the bell port engaging the clamping member.

6. The combination of an crm, e clamping member composed of a. pair ofconcaved jews, a ball comprising ay pair of spherical segments,

one of s'uch segments being secured to snid arm, a demping-boltprojecting through :1,11- other of said segments sind into-thc jaws,upon which bolt said segment turns us en exis, the ball-segment secu rodto the :um being rotatable independent ot seid other siege mantenga ingthe bolt.

- '7. A DeLand-socket lioint comprising n socket' member and n bullcomposed of soveral parts, and clamped in the socl-:etby :i bolt passingthrough. one of said bull ports und lnto the socket member, the ballknol@ being rotatable upon said bolt is un exis, one of said bullp'artsfnot engegod by 'the bolt being movable independent of seid p"Signed nt Nos. 9 to 15 itmrny York, N. Y., this 30th dey of l'. 1904-.

ALAN RQPB FlGltGLESSON.

Witnesses it. C.. HEATHER, ARTHUR S.!;.Licx.tr n1n.

